Since I switched to the new layout with the artwork in the header, many people have asked me if I could provide an archive of the images. Well, here it is :) And even better: you can now comment on each image as well. Just click anywhere on the header to go to the comments page. Use the Art > Headers menu at the top of the screen to visit the archive.
And remember: I'll need new artwork every day! If you think your work is the 'best of Blender', then submit a 1000x288 image to 'bart@ this site'.
Oh yes, and before I forget: it only too me close to 7 years, but now there's a logo on the site! With thanks to Virgílio Vasconcelos for helping me with this. Here's some background information on the logo, in case you're interested. (The font was updated recently, the rest is still accurate).
Note: if the BlenderNation logo is covering the entire header, reload the page to get the new stylesheet.